Photographic-print-drying machine



Oct. 12 1926. 1,602,700

' P. NOUN FHOTOGRAPHIC PRINT DRYING MACHINE Filed August 20, 1925 2Sheets-Sheet 1 Patented Oct. 12, 1926.

UNITED STATES PERRY NOUN, OF BUFFALO, NEW YORK.

PHOTOGRAPHlIC-PRINTfDRYING MACHINE.

Application filed. August 20, 1925.

My invention relates to improvements in photographic print dryingmachines, and the object of the invention is to devise a machine havinga rotatable member in which a plurality of print drying racks aresupported the rotatable member being enclosed in a suitably heatedcasing. A further object of the invention is to provide a closablereceptacle in which the print drying racks may be placed upon theirremoval from the rotatable member, means being furnished for conveyingthe hot air from the casing of the rotatable member to theaforementioned receptacle and from thence back into the casing. A stillfurther object of the invention is to devise means whereby the machineoperator may remove either a complete rack or individual plates, theprints being placed upon such plates for drying.

My invention consists of a photographic print drying machine constructedand arranged all as hereinafter more particularly described andillustrated in the' accompanying drawings in which:

Fig. 1 is aside elevational view of my machine, the casing being brokenaway to disclose the rotatable rack supporting memher, which is alsopartlybroken away.

Fig. 2 is a front elevational view thereof.

Fig. 3 is a perspective view of a broken away portion of the machineshowing the receptacle for receiving the racks when they are removedfrom the rotatable member.

Fig. 4: is 'a perspective view of the rotatable member removed from themachine.

Fig. 5 is a perspective view of one of the racks.

Fig. 6 is a perspective view of one of the plates upon which the printsare placed; a plurality of these plates are positioned in each rack.

Like characters of reference indicate the corresponding parts in thedifferent views.

1 is a hollow rotatable member of cruciform formation, being constructedof sheeting supported upon a plurality of angle 2 which are built abouta. central web 3 in which is secured a transverse shaft 4 Serial No.51,457.

being held in a vertical position and spaced apart by the corrugations 5and 6 in the I plates.

Longitudinal guides 11 are positioned centrally in the member 1 andconstitute with respective pairs of angle irons 2 runners between andupon which the racks are supported, two. racks being inserted into eacharm of the member 1. The racks are secured in thearms of the member 1 bybars 12 which are hinged to one side of the member, their ends beingbent inwardly and adapted tov clip over suitably positioned pins 13 uponthe other side of the member 1.

The rotatable member 1 is mounted in a casing 14:, the protruding endsof the shaft 4: being journalled in bearings 15 centrally positioned inthe sides of the casing 14.. Upon one end of the shaft t which extendsthrough its bearing 15a gear 16 is provided, and adapted to mesh with apinion 17 upon the armature shaft of an electric motor 18 which ispositioned upon the outside of a casing 19 which encloses the gear andpinion. 20 is a foot operated switch for controlling the electricmotorand consequently. the rotations of the member 1. a

On the front of the casing 14:, Iprovide an aperture closed by a slidingdoor 21 mounted in a pair of vertically positioned guides 22 on theoutside of the casing, the aperture being positioned on the same levelas the center of the member 1. Positioned at the bottom of the door 21and extending beyond one side of the machine a table 23 is furnished,its outer edge being supported upon legs 24, and its extended portionadapted to carry a rack receiving receptacle 25. This rack receivingreceptacle has two slidable doors 26 and 27, the door 26 being at rightangles and adjacent to the door 21 in the casing, the other door 27being at right angles to the door 26, as is clearly shown in Figure 8.

A pair of electrical elements 28 are positioned in a recess 29 in thebottom of the casing 14, and constitute the means for heating theinterior of the casing for drying the prints, the heated air beingsucked upwardly through the arms of the member 1 by means of the fan 80which is positioned in an orifice 31 in the top of the casing, suchorifice opening into a hot air pipe which extends into the top of therece atacle 25. 33 is a further hot air pipe extending from the bottomof the receptacle 25 to the lower portion of the casing 14, the lowerfloor ot' the receptacle having perforations for permitting the air toenter the lower pipe My machine is operated as follows:

The current is turned on in the electrical elements 2% thus heating theair in the easing l-Il, the suction fan 30 is now rotat d b i' means oilthe electric motor and the hot air is drawn upwardly into the pipe 32'tron'i where it passes donn into the receptacle 25, passing from thencethrough the pipe hack into the casing l t where it is reheated. Theprints are placed in the usual manner upon the plates 8, the platesbeing inserted into the racks, the racks are in turn inse ted into theopen ends of the arms of the member 1, a rack being put in one side ofeach arm when this is done a second rack is inserted in each arm. Themember 1 is now rotated tor a certain length of time and the first racktl at was put in is now taken out and is placed by the operator in thereceptacle 25, the door 2 being opened for this purpose, thus in theinterval between the time when the racks are taken from the machineuntil the prints are about to be removed from the plates, the prints arein a further drying compartment which will completely dry any printsthat may be slightly damp.

By opening the door 27 the racks may be removed from the receptacle 25without disturbing the operation of the machine. hen it desired toremove some of the plates from the racks it is merely necessary to swingthe bar 12 open and pull the required plates out of the rack, the bar 12being swung into position before the member l is again rotated.

From the above description it will be seen that I have devised a verysimple and etfective machine for drying photographic prints which issimple and quick in operation. Furthermore by always removing the 'achsat the same position it has been made possible to provide the table forsliding the racks onto when they are removed from the machine thusobviating the necessity of lit-ting the loaded racks by the operator asis very often the case with these machines. By the use of the receptacle25 a thorough drying of the prints is insured as they are exposed to theheated air until the moment that they are removed from the plates.

.Vhat I claim for my invention is 1. A photographic print d :yingmachine comprising a casing, a print containing member mounted in thecasing, air heating means positioned in the casing, a print receivingreceptacle in the vicinity of the easing, and means for conveying thehot air from the top of the casing and injecting it into the printreceiving receptacle.

2. A photographic print drying machine, comprising a casing, a printcontaining mem ber mounted in the casing, air heating means positionedin the casing, a print receiving receptacle in the vicinity of thecasing, means for conveying the hot air from the top of the casingthrough the print receiving receptacle, and from thence back into thelower portion of the casing.

3. A photographic print drying machine,

con'iprising a casing, a print containing member mounted in the casing,air heating means positioned in the casing, a door in the casing givingaccess to the print containing member, a table underneath the door, aprint receiving receptacle mounted on the table adjacent to the door,means for conveying the hot air from. the top of the casing through theprint receiving receptacle, and from thence back into the lower portionof the casing.

A photographic print drying machine comprising casing, a rotatable printcontaining member mounted therein, print containing drying racks adaptedto be inserted into the rotatable member, print containing platesadapted to be inserted into the drying racks, and unitary means forlocking the racks and plates in place in the rotatable member.

5. A photographic print drying machine, comprising a casing, a printcontaining member mounted in the casing, air heating means positioned inthe casing, a door in the casing giving access to the print containingmember, a table underneath the door, a print receiving receptaclemounted on the table adjacent to the door, a pair oi? doors in the printreceiving receptacle, one of said doors being adjacent to the door inthe casing and through which the prints are inserted into the printreceiving receptacle, the other door constituting means through. whichthe prints are removed from the print receiving receptacle.

6. A photographic print drying machine, comprising a casing, a printcontaining member mounted in the casing, air heating means positionedthe casing, door in the casing giving access to the print containingmember, a table underneath the door, a print receiving receptaclemounted on the table adjacent to the door, and means for conveying thehot air from the easing into the print receiving receptacle.

PERRY NO'UN

